Remove/Install Left Fuel Pressure Sensor - AR07.04-P-0201XGC

Engine 177 in model 463 

as of model year 2019 

Fig 1: Left Fuel Pressure Sensor Components Location - Engine 177 In Model 463 As Of Model Year 2019

Courtesy of MERCEDES-BENZ USA

	Risk of explosion  caused by fuel igniting, risk of poisoning  caused by inhaling and swallowing fuel as well as risk of injury  to eyes and skin caused by contact with fuel.	No fires, sparks, open flames or smoking. Pour fuels into suitable and appropriately marked containers only. Wear protective clothing when handling fuel.	AS47.00-Z-0001-01A
	Notes on avoiding damage through contamination and foreign objects		AH00.00-P-5000-01A
	General information on work on gasoline direct injection system		AH07.00-P-2000-01A
	Note on calculation of tightening torque when using insertion or socket tools with various effective lengths		AH00.00-P-0015-01CW
	Remove/install
1	Remove left low-pressure line with service connection and place to one side with hose connection connected.	: Only install upper engine cover after the leak test.	AR07.03-P-1130XGC
2	Release and disconnect electrical connector on left fuel pressure and temperature sensor (B42/2).
3	Clean rail in area of left fuel pressure and temperature sensor (B42/2).	Absolute cleanliness is essential when working on the high-pressure fuel circuit. Use only lint-free cleaning cloths. Damage will occur otherwise on the high- pressure fuel circuit.
		Assembly cleaner	*BR00.45-Z-1028-04A
4	Cover connecting point of left fuel pressure and temperature sensor (B42/2) with suitable rags and carefully loosen left fuel pressure and temperature sensor (B42/2) slightly.	No fuel should flow over the engine. Damage will occur otherwise. Wear oil-resistant, fiber-free gloves lined with rubber.
		Box wrench attachment, 27_mm	Fig 2
5	Remove left fuel pressure and temperature sensor (B42/2).	: Use new left fuel pressure and temperature sensor (B42/2), as left fuel pressure and temperature sensor (B42/2) is only designed for screwing once. Leaks can occur otherwise. Collect exuded fuel using a suitable absorbent rag.
		Pressure transducer to fuel distributor	*BA07.52-P-1002-01J
		Box wrench attachment, 27_mm	Fig 2
6	Install in the reverse order.
7	Read out and delete fault memory.
			AD00.00-P-2000-04B
8	Check fuel system for leak tightness.
			AD00.00-P-2000-04B
			AR07.03-P-1010-04MM
	Risk of accident  from vehicle starting off by itself when engine running. Risk of injury  (bruises and burns) resulting from working on the engine while it is being started or when it is running.	Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.	AS00.00-Z-0005-01A
9	Perform engine test run and check engine for proper operation and leak tightness.
10	Install upper engine cover.		AR01.10-P-2405XGC

FUEL DISTRIBUTOR

Number	Designation		Engine 177
BA07.52-P-1002-01J	Pressure transducer to fuel distributor	Nm	38

Fig 2: Identifying Box Wrench Attachment, 27 MM (000 589 10 99 30)

Courtesy of MERCEDES-BENZ USA

REPAIR MATERIALS

Number	Designation	Order number
BR00.45-Z-1028-04A	Assembly cleaner	A 000 986 56 01